If you are required to convert a decimal number like 0.57 to a percentage, you simply multiply it by 100. That is, 0.57 x 100 = 57. Therefore, 0.57 as a percentage equals 57%.
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How to calculate how many one number in another number as a percentage. For example, we need to calculate how many percent is 34 out of 65. You need to divide 65 by 34
Convert the percentage to a decimal and multiply. To calculate the percentage of the whole number, you need to first turn the percentage into a decimal as already described. Then simply multiply. [13] To find 15% of 100, rewrite the 15% as 0.15. Then just multiply 0.15 x 100, to get the solution of 15. 3 See more